/**
 * 認證頁面樣式（登入、註冊）
 */

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 440px;
}

.auth-card {
    background: #fff;
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 24px;
    font-weight: 700;
    color: #ff6b6b;
    text-decoration: none;
    margin-bottom: 24px;
}

.auth-logo i {
    font-size: 28px;
}

.auth-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 8px;
}

.auth-header p {
    color: #666;
    font-size: 14px;
}

/* 表單 */
.auth-form {
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin-bottom: 8px;
}

.form-group label i {
    color: #999;
    font-size: 12px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    font-size: 15px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    outline: none;
}

.form-group.has-error input {
    border-color: #ff4757;
}

.error-message {
    display: block;
    color: #ff4757;
    font-size: 12px;
    margin-top: 6px;
}

/* 密碼輸入 */
.password-input {
    position: relative;
}

.password-input input {
    padding-right: 48px;
}

.toggle-password {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 4px;
}

.toggle-password:hover {
    color: #666;
}

/* 表單選項 */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: #666;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #667eea;
}

.forgot-link {
    color: #667eea;
    font-size: 14px;
    text-decoration: none;
}

.forgot-link:hover {
    text-decoration: underline;
}

/* 按鈕 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-block {
    width: 100%;
}

/* 分隔線 */
.auth-divider {
    display: flex;
    align-items: center;
    margin: 24px 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #e0e0e0;
}

.auth-divider span {
    padding: 0 16px;
    color: #999;
    font-size: 13px;
}

/* 社群登入 */
.social-login {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-social {
    background: #fff;
    border: 1px solid #e0e0e0;
    color: #333;
}

.btn-social:hover {
    background: #f5f5f5;
}

.btn-google i {
    color: #db4437;
}

.btn-facebook i {
    color: #4267b2;
}

.btn-line {
    background: #00B900;
    border-color: #00B900;
    color: #fff;
}

.btn-line:hover {
    background: #00a000;
    border-color: #00a000;
}

.btn-line i {
    color: #fff;
}

/* 頁腳 */
.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #e0e0e0;
}

.auth-footer p {
    font-size: 14px;
    color: #666;
}

.auth-footer a {
    color: #667eea;
    font-weight: 600;
    text-decoration: none;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* 提示訊息 */
.alert {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: #fff5f5;
    color: #c92a2a;
    border: 1px solid #ffc9c9;
}

.alert-success {
    background: #f0fff4;
    color: #2f9e44;
    border: 1px solid #b2f2bb;
}

/* 響應式 */
@media (max-width: 480px) {
    .auth-card {
        padding: 24px;
    }
    
    .auth-header h1 {
        font-size: 24px;
    }
    
    .form-options {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
}